Pixel arrangement structure, metal mask, and display device

ABSTRACT

Disclosed are a pixel arrangement structure, a metal mask, and a display device, and in the pixel arrangement structure, each repeating element includes four sub-pixels distributed in two rows by two columns, where the four sub-pixels include two first sub-pixels in different rows and different columns, and one second sub-pixel and one third sub-pixel in different rows and different columns. While an image is being displayed, any one first sub-pixel together with one second sub-pixel adjacent thereto and one third sub-pixel adjacent thereto can constitute a light-emitting pixel, so that the image can be displayed at a high resolution using a physical low resolution through borrowing between the sub-pixels.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority of Chinese Patent Application No.201810134124.7, filed on Feb. 9, 2018, which is hereby incorporated byreference in its entirety.

FIELD

The present disclosure relates to the field of display technologies, andparticularly to a pixel arrangement structure, a metal mask, and adisplay device.

BACKGROUND

An Organic Light-Emitting Diode (OLED) display is one of focuses in theexisting research field of flat panel displays, and has low powerconsumption, a low production cost, self-luminescence, a wide angle ofview, a high response speed, and other advantages over a Liquid CrystalDisplay (LCD); and at present, the OLED display has come to take theplace of the traditional liquid crystal display.

SUMMARY

A pixel arrangement structure according to an embodiment of thedisclosure includes a plurality of repeating elements arranged in amatrix, wherein each of the repeating elements includes four sub-pixelsdistributed in two rows by two columns, and the four sub-pixels includetwo first sub-pixels in different rows and different columns, and onesecond sub-pixel and one third sub-pixel; the second sub-pixel and thethird sub-pixel are in different rows and different columns.

Optionally, the pixel arrangement structure according to the embodimentof the disclosure includes at least one of following features:

each of the first sub-pixels includes two sub-pixel components arrangedin a mirror pattern;

the second sub-pixel includes two sub-pixel components arranged in amirror pattern; or

the third sub-pixel includes two sub-pixel components arranged in amirror pattern.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, facing sides of two sub-pixel componentsarranged in a mirror pattern in a same sub-pixel are parallel to eachother.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, a shape of the sub-pixel components is asemicircle or a semi-ellipse.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, the two sub-pixel components arranged in amirror pattern are arranged in a row or column direction.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, a shape of a sub-pixel adjacent to asub-pixel component in a column direction is an abnormally-shapedquadrilateral, and a side of the abnormally-shaped quadrilateralproximate to the sub-pixel component is an inward concave arc.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, a shape of a sub-pixel adjacent to asub-pixel component in the row direction is an abnormally-shapedquadrilateral, and a side of the abnormally-shaped quadrilateralproximate to the sub-pixel component is an inward concave arc.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, facing sides of two adjacent sub-pixels inthe column direction are parallel to each other.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, facing sides of two adjacent sub-pixels inthe row direction are parallel to each other.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, the first sub-pixels, the secondsub-pixel, and the third sub-pixel are one of a blue sub-pixel, redsub-pixel, and green sub-pixel; the first sub-pixels, the secondsub-pixel and the third sub-pixel are different in color.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, an area of the blue sub-pixel is largerthan an area of the green sub-pixel, and an area of the blue sub-pixelis larger than an area of the red sub-pixel.

Optionally, the pixel arrangement structure according to the embodimentof the disclosure includes at least one of following features:

the smallest spacings between each two adjacent sub-pixels in the rowdirection are equal; and

the smallest spacings between each two adjacent sub-pixels in the columndirection are equal.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, the smallest spacings between two adjacentsub-pixels in the row direction are equal to the smallest spacingsbetween two adjacent sub-pixels in the column direction.

Correspondingly, an embodiment of the disclosure further provides ametal mask for fabricating the pixel arrangement structure aboveaccording to the embodiment of the disclosure, the metal mask includinga plurality of opening areas corresponding in shape and position to thefirst sub-pixels, the second sub-pixel, or the third sub-pixel.

Correspondingly, an embodiment of the disclosure further provides adisplay device including the pixel arrangement structure above accordingto the embodiment of the disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a pixel arrangementstructure according to an embodiment of the disclosure.

FIG. 2 is a schematic structural diagram of another pixel arrangementstructure according to an embodiment of the disclosure.

FIG. 3 is a schematic structural diagram of a further pixel arrangementstructure according to an embodiment of the disclosure.

FIG. 4 is a schematic structural diagram of a further pixel arrangementstructure according to an embodiment of the disclosure.

FIG. 5 is a schematic structural diagram of a further pixel arrangementstructure according to an embodiment of the disclosure.

FIG. 6 is a schematic structural diagram of a further pixel arrangementstructure according to an embodiment of the disclosure.

FIG. 7 is a schematic structural diagram of borrowing a sub-pixel in thepixel arrangement structure according to the embodiment of thedisclosure.

FIG. 8A is a schematic structural diagram of a metal mask correspondingto first sub-pixels in FIG. 3 according to an embodiment of thedisclosure.

FIG. 8B is a schematic structural diagram of a metal mask correspondingto second sub-pixels in FIG. 3 according to an embodiment of thedisclosure.

FIG. 8C is a schematic structural diagram of a metal mask correspondingto third sub-pixels in FIG. 3 according to an embodiment of thedisclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to make the objects, technical solutions, and advantages of thedisclosure more apparent, the disclosure will be described below infurther details with reference to the drawings, and apparently theembodiments described below are only a part but not all of theembodiments of the disclosure. Based upon the embodiments here of thedisclosure, all the other embodiments which can occur to thoseordinarily skilled in the art without any inventive effort shall fallinto the scope of the disclosure.

The shapes and sizes of respective components in the drawings are notintended to reflect any real proportion, but only intended to illustratethe disclosure of the disclosure.

The structure of the OLED display generally includes an base substrate,and sub-pixels fabricated and arranged in a matrix on the basesubstrate, where the respective sub-pixels are typically formed asorganic electroluminescent structures of an organic material at thepositions of the corresponding sub-pixels on the array substrate using ametal mask through vapor-plating. Since the size of a sub-pixel isdetermined directly by the size of an opening of the metal mask, afabrication process is limited by the metal mask in that ahigh-definition display device cannot be fabricated using the existingtraditional arrangement structure of RGB pixels.

As illustrated in FIG. 1 to FIG. 6, a pixel arrangement structureaccording to an embodiment of the disclosure includes a plurality ofrepeating elements 100 arranged in a matrix, where each repeatingelement 100 includes four sub-pixels distributed in two rows by twocolumns, and the four sub-pixels include two first sub-pixels 01 indifferent rows and different columns, and one second sub-pixel 02 andone third sub-pixel 03 in different rows and different columns.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, as illustrated in FIG. 7, while an imageis being displayed, any first sub-pixel 01 together with one secondsub-pixel adjacent thereto and one third sub-pixel adjacent thereto canconstitute a light-emitting pixel (three sub-pixels covered with adotted triangle as illustrated in FIG. 7), so that the image can bedisplayed at a high resolution using a physical low resolution throughborrowing between the sub-pixels.

Furthermore, the pixel arrangement structure according to the embodimentof the disclosure is different from the traditional arrangementstructure of RGB pixels in that the first sub-pixels 01, the secondsub-pixels 02, and the third sub-pixels 03 can be arranged densely underthe same process condition so that the area of a sub-pixel can be madeas large as possible while the smallest spacing between sub-pixels issatisfied, to thereby lower driving current in the display device, andprolong the service lifetime of the display device.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, the first sub-pixels, the secondsub-pixels, and the third sub-pixels are one of blue sub-pixels, redsub-pixels, and green sub-pixels respectively, and for example, thefirst sub-pixels are red sub-pixels, the second sub-pixels are greensub-pixels, and the third sub-pixels are blue sub-pixels; or the firstsub-pixels are green sub-pixels, the second sub-pixels are redsub-pixels, and the third sub-pixels are blue sub-pixels; or the firstsub-pixels are blue sub-pixels, the second sub-pixels are redsub-pixels, and the third sub-pixels are green sub-pixels, although theembodiment of the disclosure will not be limited thereto.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, as illustrated in FIG. 7, a red sub-pixelR together with a green sub-pixel G and a blue sub-pixel B adjacentthereto can constitute a light-emitting pixel (three sub-pixels coveredwith the dotted triangle as illustrated in FIG. 7), so that an image canbe displayed at a high resolution using a physical low resolutionthrough borrowing between the sub-pixels.

In an optional implementation, sub-pixels in different colors generallyhave different service lifetimes, so the areas of the sub-pixels can beset according to the service lifetimes of the sub-pixels, and generallythe area of a sub-pixel with the shortest service lifetime is set to bethe largest.

Since the service lifetime of a blue sub-pixel in the existing organiclight-emitting material is the shortest, optionally in the pixelarrangement structure according to the embodiment of the disclosure, thearea of a blue sub-pixel is larger than the area of a green sub-pixel,and the area of a blue sub-pixel is larger than the area of a redsub-pixel.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, the area of a red sub-pixel can be equalto the area of a green sub-pixel, or the area of a red sub-pixel can beset larger than the area of a green sub-pixel, or the area of a redsub-pixel can be set larger than the area of a red sub-pixel, althoughthe embodiment of the disclosure will not be limited thereto.

It shall be noted that in the pixel arrangement structure according tothe embodiment of the disclosure, the shapes of the two first sub-pixelsin each repeating element may or may not be the same, although theembodiment of the disclosure will not be limited thereto.

Furthermore, when the shapes of the two first sub-pixels in eachrepeating element are the same, arrangement angles of the two firstsub-pixels may or may not be the same, although the embodiment of thedisclosure will not be limited thereto.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, as illustrated in FIG. 4 and FIG. 6, eachfirst sub-pixel 01 includes two sub-pixel components 001 arranged in amirror pattern; or

as illustrated in FIG. 2, each second sub-pixel 02 includes twosub-pixel components 001 arranged in a mirror pattern; or

as illustrated in FIG. 3 and FIG. 5, each third sub-pixel 03 includestwo sub-pixel components 001 arranged in a mirror pattern.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, in order to guarantee a uniform width ofthe gap between the two sub-pixel components 001 arranged in a mirrorpattern to thereby reduce the spacing between the two sub-pixelcomponents 001, as illustrated in FIG. 2 to FIG. 6, facing sides of twosub-pixel components 001 arranged in a mirror pattern in the samesub-pixel are parallel to each other. In an optional implementation, thefacing sides of the two sub-pixel components 001 may alternatively benot parallel to each other, although the embodiment of the disclosurewill not be limited thereto.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, as illustrated in FIG. 1 to FIG. 6, theshapes of the first sub-pixels 01, the second sub-pixels 02, and thethird sub-pixels 03 can be a polygon, e.g., a rectangle, a pentagon, anormal hexagon, a normal octagon, etc., or may be a round, an ellipse,or another regular pattern, or can be an irregular pattern, although theembodiment of the disclosure will not be limited thereto.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, the shape of the sub-pixel components canbe a regular pattern, or can be an irregular pattern, although theembodiment of the disclosure will not be limited thereto.

In an optional implementation, there is such a limiting vapor-platingprocess that if there are less corners on the edge of a sub-pixel, thatis, the edge appears more like an arc, then it will be more difficultfor a stress to be concentrated in the vapor-plating process, and thuseasier for the vapor-plating process to be performed. Optionally, in thepixel arrangement structure according to the embodiment of thedisclosure, the shape of the sub-pixel components 001 is a semicircle asillustrated in FIG. 3, FIG. 5, and FIG. 6, or the shape of the sub-pixelcomponents 001 is a semi-ellipse as illustrated in FIG. 4.

Optionally, in the display panel, traveling lines generally extend inthe row or column direction, so in order to facilitate routing of thelines, optionally in the pixel arrangement structure according to theembodiment of the disclosure, two sub-pixel components 001 arranged in amirror pattern in the same sub-pixel are arranged in the row directionas illustrated in FIG. 5, or two sub-pixel components 001 arranged in amirror pattern in the same sub-pixel are arranged in the columndirection as illustrated in FIG. 2, FIG. 3, FIG. 4, and FIG. 6. Ofcourse, in an optional implementation, the two sub-pixel components 001arranged in a mirror pattern can alternatively be arranged in anotherdirection, although the embodiment of the disclosure will not be limitedthereto.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, as illustrated in FIG. 3 to FIG. 6, theshape of a sub-pixel adjacent to a sub-pixel component 001 in the columndirection is an abnormally-shaped quadrilateral, and the side of theabnormally-shaped quadrilateral proximate to the sub-pixel component 001is an inward concave arc, so that on one hand, the difficulty ofvapor-plating a first sub-pixel 01 can be lowered, and on the otherhand, a uniform width of the gap between a first sub-pixel 01 and asecond sub-pixel 02 can be guaranteed, thus making the opening ratio ofa pixel as high as possible while avoiding color crosstalk.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, as illustrated in FIG. 3 to FIG. 6, theshape of a sub-pixel adjacent to a sub-pixel component 001 in the rowdirection is an abnormally-shaped quadrilateral, and the side of theabnormally-shaped quadrilateral proximate to the sub-pixel component 001is an inward concave arc, so that on one hand, the difficulty ofvapor-plating the abnormally-shaped quadrilateral sub-pixel can belowered, and on the other hand, a uniform width of the gap between thesub-pixels can be guaranteed, thus making the opening ratio of a pixelas high as possible while avoiding color crosstalk.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, in order to guarantee a uniform width ofthe gap between adjacent sub-pixels in the column direction to therebyreduce the spacing between adjacent sub-pixels in the column direction,facing sides of two adjacent sub-pixels (01 and 03, or 01 and 02) in thecolumn direction are parallel to each other as illustrated in FIG. 1 toFIG. 6. Of course, in a particular implementation, facing sides of twoadjacent sub-pixels in the column direction may alternatively be notparallel to each other, although the embodiment of the disclosure willnot be limited thereto.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, in order to guarantee a uniform width ofthe gap between adjacent sub-pixels in the row direction to therebyreduce the spacing between adjacent sub-pixels in the row direction,facing sides of two adjacent sub-pixels (01 and 03, or 01 and 02) in therow direction are parallel to each other as illustrated in FIG. 2, FIG.3, and FIG. 5. Of course, in a particular implementation, facing sidesof two adjacent sub-pixels in the row direction may alternatively be notparallel to each other, although the embodiment of the disclosure willnot be limited thereto.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, the smallest spacings between each twoadjacent sub-pixels in the row direction are equal; and/or the smallestspacings between each two adjacent sub-pixels in the column directionare equal.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, the smallest spacings between each twoadjacent sub-pixels in the row direction are equal to the smallestspacings between each two adjacent sub-pixels in the column direction,so that the pixels can be distributed uniformly on the display panel.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, the smallest spacing between adjacentsub-pixels shall be larger than or equal to a process extreme distanceto thereby satisfy a process demand.

Particularly, the process extreme distance is generally dependent upon afabrication process in use, and when a pixel is patterned in an etchingprocess using a metal mask, optionally a Fine Metal Mask (FMM), theprocess extreme distance is approximately 16 μm, or when a pixel ispatterned in a laser, electroforming, etc., process, the process extremedistance is shorter.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, the spacing between two sub-pixelcomponents arranged in a mirror pattern in the same sub-pixel can beless than the spacing between two adjacent sub-pixels because if thespacing between adjacent sub-pixels is too small, then color crosstalkwill tend to occur, and since the colors of two sub-pixel components inthe same sub-pixel are the same, their spacing may be set smaller.

Optionally, in the pixel arrangement structure according to theembodiment of the disclosure, the particular shapes, positionalrelationship, etc., of the first sub-pixels 01, the second sub-pixels02, and the third sub-pixels 03 can be designed as needed, and in a realprocess, some error may occur due to a limiting process condition oranother factor, so the shapes, positions, and relative positionalrelationship of the respective sub-pixels in the pixel arrangementstructure according to the embodiment of the disclosure may roughlysatisfy the condition above without departing the scope of thedisclosure.

Based upon the same inventive idea, an embodiment of the disclosurefurther provides a metal mask for fabricating the pixel arrangementstructure above according to the embodiment of the disclosure, and asillustrated in FIG. 8A to FIG. 8C, the metal mask includes a pluralityof opening areas 011, 012, or 013, where the opening areas 011correspond in shape and position to the first sub-pixels 01 asillustrated in FIG. 8A, or the opening areas 012 correspond in shape andposition to the second sub-pixels 02 as illustrated in FIG. 8B, or theopening areas 013 correspond in shape and position to the thirdsub-pixels 03 as illustrated in FIG. 8C.

In an optional implementation, since it is generally not easy tovapor-plating the edge of an opening area, the area of an opening areacorresponding to a sub-pixel is generally larger than the area of thesub-pixel in the metal mask, and ideally the width of the opening areais larger than the width of the sub-pixel by a half of the width of thegap between two sub-pixels.

Optionally, FIG. 8A illustrates a structural diagram of a Fine MetalMask (FMM) for fabricating the first sub-pixels 01 in FIG. 3, FIG. 8Billustrates a structural diagram of a Fine Metal Mask (FMM) forfabricating the third sub-pixels 03 in FIG. 3, and FIG. 8C illustrates astructural diagram of a Fine Metal Mask (FMM) for fabricating the secondsub-pixels 02 in FIG. 3. As can be apparent, the opening areas in FIG.8A to FIG. 8C are distributed uniformly in the mask so that a stress ofan organic material can be distributed uniformly in a vapor-platingprocess to thereby make the vapor-plating process less difficult.

It shall be noted that when a sub-pixel includes two sub-pixelcomponents, organic light-emitting layers of the two sub-pixelcomponents can be connected together, and anodes of the two sub-pixelcomponents can be separate from each other, so the shape of an openingarea in a corresponding fine metal mask is the same as a shape consistedof outer edges of the two sub-pixel components, and as illustrated inFIG. 3, a third sub-pixel 03 includes two sub-pixel components 001 inthe shape of a semicircle, but a pattern consisted of outer edges of thetwo sub-pixel components 001 is elliptic, so the shape of an openingarea in a fine metal mask corresponding to the third sub-pixel 03 asillustrated in FIG. 8B.

Optionally, the pixel arrangement structure above is formed using thefine metal mask above by firstly combining the respective fine metalmasks as illustrated in FIG. 8A to FIG. 8C with a cover mask, a howlingmask, and an alignment mask into a Mask Frame Assembly (MFA) and thenplacing the resulting MFA into a corresponding vapor-plating chamber,and vapor-plating an organic light-emitting material corresponding tothe respective sub-pixels. In an optional implementation, only one typeof sub-pixels can be patterned at a time, so after one type ofsub-pixels are patterned, another type of sub-pixels are patterned, andafter the three types of sub-pixels are patterned sequentially, thepixel arrangement structure as illustrated in FIG. 3 can be obtained.

Based upon the same inventive idea, an embodiment of the disclosurefurther provides a display device including the pixel arrangementstructure according to any one of the embodiments above of thedisclosure. The display device can be a mobile phone, a tablet computer,a TV set, a monitor, a notebook computer, a digital photo frame, anavigator, or any other product or component with a display function.Reference can be made to the embodiment of the pixel arrangementstructure above for an implementation of the display device, and arepeated description thereof will be omitted here.

In the pixel arrangement structure, the metal mask, and the displaydevice above according to the embodiments of the disclosure, eachrepeating element in the pixel arrangement structure includes foursub-pixels distributed in two rows by two columns, where the foursub-pixels include two first sub-pixels in different rows and differentcolumns, and one second sub-pixel and one third sub-pixel in differentrows and different columns. While an image is being displayed, any onefirst sub-pixel together with one second sub-pixel adjacent thereto andone third sub-pixel adjacent thereto can constitute a light-emittingpixel, so that the image can be displayed at a high resolution using aphysical low resolution through borrowing between the sub-pixels.

Evidently those skilled in the art can make various modifications andvariations to the disclosure without departing from the spirit and scopeof the disclosure. Thus the disclosure is also intended to encompassthese modifications and variations thereto so long as the modificationsand variations come into the scope of the claims appended to thedisclosure and their equivalents.

1. A pixel arrangement structure, comprising a plurality of repeatingelements arranged in a matrix, wherein each of the repeating elementcomprises four sub-pixels distributed in two rows by two columns, andthe four sub-pixels comprise two first sub-pixels in different rows anddifferent columns, and one second sub-pixel and one third sub-pixel; thesecond sub-pixel and the third sub-pixel are in different rows anddifferent columns.
 2. The pixel arrangement structure according to claim1, comprising at least one of following features: each of the firstsub-pixels comprises two sub-pixel components arranged in a mirrorpattern; the second sub-pixel comprises two sub-pixel componentsarranged in a mirror pattern; or the third sub-pixel comprises twosub-pixel components arranged in a mirror pattern.
 3. The pixelarrangement structure according to claim 2, wherein facing sides of twosub-pixel components arranged in a mirror pattern in a same sub-pixelare parallel to each other.
 4. The pixel arrangement structure accordingto claim 3, wherein a shape of the sub-pixel components is a semicircleor a semi-ellipse.
 5. The pixel arrangement structure according to claim4, wherein the two sub-pixel components arranged in a mirror pattern arearranged in a row or column direction.
 6. The pixel arrangementstructure according to claim 5, wherein a shape of a sub-pixel adjacentto a sub-pixel component in the column direction is an abnormally-shapedquadrilateral, and a side of the abnormally-shaped quadrilateralproximate to the sub-pixel component is an inward concave arc.
 7. Thepixel arrangement structure according to claim 5, wherein a shape of asub-pixel adjacent to a sub-pixel component in the row direction is anabnormally-shaped quadrilateral, and a side of the abnormally-shapedquadrilateral proximate to the sub-pixel component is an inward concavearc.
 8. The pixel arrangement structure according to claim 2, whereinfacing sides of two adjacent sub-pixels in a column direction areparallel to each other.
 9. The pixel arrangement structure according toclaim 2, wherein facing sides of two adjacent sub-pixels in a rowdirection are parallel to each other.
 10. The pixel arrangementstructure according to claim 2, wherein the first sub-pixels, the secondsub-pixel, and the third sub-pixel are one of a blue sub-pixel, a redsub-pixel, and a green sub-pixel; the first sub-pixels, the secondsub-pixel and the third sub-pixel are different in color.
 11. The pixelarrangement structure according to claim 10, wherein an area of the bluesub-pixel is larger than an area of the green sub-pixel, and an area ofthe blue sub-pixel is larger than an area of the red sub-pixel.
 12. Thepixel arrangement structure according to claim 2, further comprising atleast one of following features: smallest spacings between each twoadjacent sub-pixels in a row direction are equal; and smallest spacingsbetween each two adjacent sub-pixels in a column direction are equal.13. The pixel arrangement structure according to claim 12, wherein thesmallest spacings between each two adjacent sub-pixels in the rowdirection are equal to the smallest spacings between each two adjacentsub-pixels in the column direction.
 14. A metal mask for fabricating thepixel arrangement structure according to claim 1, the metal maskcomprising a plurality of opening areas corresponding in shape andposition to the first sub-pixels, the second sub-pixel, or the thirdsub-pixel.
 15. A display device, comprising the pixel arrangementstructure according to claim
 1. 16. The display device according toclaim 15, wherein the pixel arrangement structure comprises at least oneof following features: each of the first sub-pixels comprises twosub-pixel components arranged in a mirror pattern; the second sub-pixelcomprises two sub-pixel components arranged in a mirror pattern; or thethird sub-pixel comprises two sub-pixel components arranged in a mirrorpattern.
 17. The display device according to claim 16, wherein facingsides of two sub-pixel components arranged in a mirror pattern in a samesub-pixel are parallel to each other.
 18. The display device accordingto claim 17, wherein a shape of the sub-pixel components is a semicircleor a semi-ellipse.
 19. The display device according to claim 18, whereinthe two sub-pixel components arranged in a mirror pattern are arrangedin a row or column direction.
 20. The display device according to claim19, wherein a shape of a sub-pixel adjacent to a sub-pixel component inthe column direction is an abnormally-shaped quadrilateral, and a sideof the abnormally-shaped quadrilateral proximate to the sub-pixelcomponent is an inward concave arc.